mirror of
git://sourceware.org/git/lvm2.git
synced 2024-12-21 13:34:40 +03:00
29aa6d5850
o Changed disk-rep to use these o if NDEBUG is not defined the dev_cache will check for open devices on teardown. I was hoping this would speed things up. But I'm still getting: reti:/home/joe/sistina/LVM2/tools# time ./lvm vgchange -a n Volume group vg0 successfully changed real 0m5.751s user 0m0.060s sys 0m0.070s even though I have only 1 device with the vg on it passing the filters.
55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
/*
|
|
* Copyright (C) 2001 Sistina Software (UK) Limited.
|
|
*
|
|
* This file is released under the GPL.
|
|
*/
|
|
|
|
#ifndef _LVM_DEVICE_H
|
|
#define _LVM_DEVICE_H
|
|
|
|
#include "lvm-types.h"
|
|
#include "list.h"
|
|
|
|
/*
|
|
* All devices in LVM will be represented by one of these.
|
|
* pointer comparisons are valid.
|
|
*/
|
|
struct device {
|
|
struct list aliases; /* struct str_list from lvm-types.h */
|
|
dev_t dev;
|
|
|
|
/* private */
|
|
int fd;
|
|
};
|
|
|
|
/*
|
|
* All io should use these routines.
|
|
*/
|
|
int dev_get_size(struct device *dev, uint64_t *size);
|
|
|
|
int dev_open(struct device *dev, int flags);
|
|
int dev_close(struct device *dev);
|
|
|
|
int64_t dev_read(struct device *dev,
|
|
uint64_t offset, int64_t len, void *buffer);
|
|
int64_t dev_write(struct device *dev,
|
|
uint64_t offset, int64_t len, void *buffer);
|
|
int dev_zero(struct device *dev, uint64_t offset, int64_t len);
|
|
|
|
|
|
static inline const char *dev_name(struct device *dev) {
|
|
return list_item(dev->aliases.n, struct str_list)->str;
|
|
}
|
|
|
|
|
|
static inline int is_lvm_partition(const char *name) {
|
|
return 1;
|
|
}
|
|
|
|
#define LVM_DEFAULT_DIR_PREFIX "/dev/"
|
|
/* FIXME Allow config file override */
|
|
static inline char *lvm_dir_prefix(void) { return LVM_DEFAULT_DIR_PREFIX; }
|
|
|
|
#endif
|
|
|